22163087789 has 2 divisors, whose sum is σ = 22163087790. Its totient is φ = 22163087788.

The previous prime is 22163087767. The next prime is 22163087897. The reversal of 22163087789 is 98778036122.

Together with next prime (22163087897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21482764900 + 680322889 = 146570^2 + 26083^2 .

It is a cyclic number.

It is not a de Polignac number, because 22163087789 - 2²⁰ = 22162039213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22163087789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22163087729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11081543894 + 11081543895.

It is an arithmetic number, because the mean of its divisors is an integer number (11081543895).

Almost surely, 2^22163087789 is an apocalyptic number.

It is an amenable number.

22163087789 is a deficient number, since it is larger than the sum of its proper divisors (1).

22163087789 is an equidigital number, since it uses as much as digits as its factorization.

22163087789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 22163087789 in words is "twenty-two billion, one hundred sixty-three million, eighty-seven thousand, seven hundred eighty-nine".